Title :
Interference Aware Relay Assignment Schemes for Multiuser Cognitive Radio Systems
Author :
Naeem, M. ; Pareek, U. ; Lee, D.C.
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada
Abstract :
In this paper, we present two low-complexity interference aware multiple relay assignment schemes for cognitive radio systems. The main objective in assigning multiple relays is to maximize the sum capacity of the cognitive radio system under the constraint of acceptable interference to the primary users (PU). The computational complexity of finding an optimal assignment by exhaustive search grows exponentially with the number of relays and users. The proposed schemes have low computational complexity, and their effectiveness is verified through simulation results.
Keywords :
cognitive radio; computational complexity; interference (signal); multiuser channels; optimisation; telecommunication network routing; computational complexity; interference aware relay assignment; multiple relay assignment; multiuser cognitive radio systems; optimal assignment; primary users; sum capacity; Cognitive radio; Complexity theory; Interference constraints; Receivers; Relays; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2010.5594267
